Bobbin-stripping machine.



D. L. CHANDLER.

BOBBIN STRIPPING MACHINE.

APPLICATlON man rams. 1914.

1,147,678. Patented July 20, 1915.

f wyzesse .zzzamazm D. L. CHANDLER.

BOBBINVSTRIPPING MACHINE.

APPLICATION FILED mum. 1914.

1 ,147,678. Patented July 20, 1915.

3 SHEETS-SHEET 2. T" '5 D, L. CHANDLER.

BOBBlN STRIPPING MACHINE.

APPLICATION FILED MAR. 55. 1914.

1,147,678. Patented July 20, 1915.

3 SHEETS-SHEET 3 rinrrnn sra'rns PATENT orrron.

DANIEL L. oHANnLnmor AYER, MASSACHUSETTS, ass enon TO FITGHBUBG BOBBIN CLEANING MACHINE 00., or FITGI-IBURG, MASSACHUSETTS, a CORPORATION or MASSACHUSETTS.

waters.

To all whom it may concern Be it known that I, DANIEL L. CHANDLER,

a citizen of the United States, residing at Ayer, in the county of Middlesex and State of Massachusetts, have invented a new I and useful Bobbin-Stripping Machine, of which the following is a specification.

This invention relates to a machine for stripping the filling from bobbins and the principal objects thereof are to provide a practicable and eflicient machine capable of operating at a sufficiently high speed to take care of all the bobbins that a person can 1 supply to the machine; to provide a construction in which the bobbins can be placed in position, one at a time but not necessarily exactly in synchronism with the operation of the machine so thatthe operator applying the bobbins can have considerable liberty to vary the speed of his actions; to provide a construction in which after the bobbins are placed in the machine in a definite place by the operator they will not again be released and the machine will not have to depend'for its effective operation upon any free movement of the bobbins themselves; to provide for positively'forcing. the bobbin stripping jaws against the bobbin at the beginning of the stripping operation so that they will certainly engage the filling at the large end of the bobbin and positively clear it from that end and yet force the jaws against the bobbin under yielding pres sure during the remainder of the motionso as to avoid unnecessary wear and tear on the bobbins; to provide an arrangement whereby the stripping operation will be of the same efliciency independently of the length of the bobbin and whereby the bobbin is held during the final operation of the stripping mechanism positively imposition without the interposition of any moving parts; to provide positive and effective a means for getting rid of the waste in such a way that it cannot possibly interfere with the operation of the'm'achine in any way; and to deposit the bobbins in another part without the employment of any mechanism for dislodging them.

The invention also involves improvements in details of construction of these and other parts of the machine and especially in the BOBBIN-S'IRIPPING MACHINE. f

Specification of Letters Patent. Patented July 20, 1915. Application filed March 5, 1914. Serial No. 822,698.

combination of mechanism whereby these several parts are engaged to cooperate effectively with each a other.

. Reference is to.be had to the accompanying drawings in which Figure 1 is a plan of a bobbin stripping machlne constructed in accordance with this invention; Fig. 2 is a side elevation of the same 5 F ig."3 isa'sideelevatio'n of the strip.-

ping mechanism jproper on enlarged scale;

Fig. 4.- is a similar view showing the parts inanother position; F ig.-5 is a plan of the same; -Fig. 6 is a fragmentary plan of a portion of the mechanism shown in Fig. 5 with the parts in another position; Fig. 7

is a side elevation of the guides and switches i for the aw operating mechanism; Fig. 8 is a side elevation ofa' detail thereof; Fig. 9

is a. side elevation of one of the'bobbin stripping'jaws on enlarged scale; Fig. 10 is an end elevation of the same; Fig. 11 "is a plan of a portion ofthe mechanism for operating the bobbin holding wheel; and Fig. 12 is a side elevation thereof. 7

The machine is shown as mounted' on a" frame 10 and as provided witha shaft/11. receivingpower from a pulley 12 and trans-i mitting it through gears 13 to a'main shaft 14. In whatever way this shaft receives power it has two functions, first, to feed the bobbins, and second, to operate thebobbin stripping mechanism. For accomplishing the first purpose, this shaft is provided with a cam 15 which engages a lever-.16 and swings it with a certain predetermined mo tion. Pivotally connected with the lever is a link 17 which hason the end thereof an On the shaft 20-is also a wheel 23 which constitutes anendless carrier for bobbins, and is provided with a'series'of' radial pins 24; for receivingthe bobbins m be stripped. The inner'edge of'this wheel is provided witha series of notches 25.

The frame is provided with a projection 26 on which is pivoted a latch 27 mounted to swing in a horizontal plane. and pressed by a spring 28 toward the edge of the wheel. The end of the latch can engage in the notches as they come around into position. However, the end of the arm 21 is provided with a cam 29 adapted to engage the operative edge of the latch and force it away from the circumference of the wheel at times as will appear hereinafter, and then allow it to be retracted. This arm 21 has an integral projection 80 for engaging the top of the latch and limiting its downward motion. The other arm 19 is provided with a radial stud 31 on which is pivoted a pawl 32 pressed by a spring 33 into contact with the edge of the wheel so that it can enter the notches 25. As will appear from the description of the operation which will be given later, the vibrations of the lever 16 cause the wheel to be rotated intermittently and the latch locks it in certain positions and then releases it.

The wheel is provided with a seies of springs 35 each one fixed to the circumfer ence of the wheel and having a perforation for one of the pins 24. These springs normally hold the bobbin slightly away from the circumference of the wheel until positively forced up toward it.

The rest of the operations controlled by the shaft 14 are under control of a crank l0 operating a link 41, which in turn is pivoted to a slide 42. This slide moves in guides horizontally arranged on the side of the frame 10 and the slide is arranged in vertical position on the side of the machine.

It will be understood, of course, that one of the pins 24 with a bobbin thereon is brought by the mechanism previously above described into horizontal position shown in 2 and that the slide then acts for the purpose of performing the bobbin stripping functions. For this purpose the slide is provided with a pair of pivoted jaws 44 one above and the other below the central line of the slide. These jaws have hooks 45 eX- tending from them in opposite directions and these hooks are connected by a spring i6 for normally holding the jaws together when there is nothing to resist the same.

The guides 43 are provided near the end thereof with a flat horizontal rail l? having a thin part 48 at the center thereof, and a thick part 49 near each end. Above and below this rail is a pair of horizontal tracks 50 spaced from it. Each of these tracks is provided with a pivoted switch 51 curved over into contact with the rail 49 at its inner end. These switches are provided with projecting pins 52 connected by a spring 53 for yieldingly forcing them into the position shown in Figs. 3 and 7. 0n the eXtreme ends of the j aws 44- are a pair of projections 54 extending at right angles to the planes of these jaws into position to be guided by the rail l8 and tracks50. On each of the aws 44: also is pivoted a waste-removing jaw 55. This is provided with a plate 56 having a concave'sharp edge adapted to engage the waste and remove it as will appear hereinafter. A spring 57 is provided for forcing each of these jaws toward the other, this spring being adjustable by a plate 58 and screw 59. A pair of'stops 60 and 61 are provided for limiting the motions of each jaw 55.

For the purpose of removing the waste from the machine and throwing it to one side the following mechanism is provided On the frame 10 is fixed a bracket 63. Pivoted at 64 on this bracket is a flat ended stud 65 provided with a trigger 66. The reciprocations of the slide 4A are intended to operate these parts and for that purpose the slide is provided with a lever 67 pivoted thereon operated by a spring 68 up against a stud 69 moving with the slide. 011 the stud 65 is a cylindrical slide 70 pivotally connected with an operating arm 71 which is pivoted on a stud 72 on the bracket 63. A spring 73 normally moves this arm 71 in such a direction as to force the slide 70 and stud 65 back into the position shown in Fig. 5. An annular cam 7 is provided on the slide 42 for positively operating the slide 70 back into that position by engaging pin 75 on the link 71, in case the spring does not do the work completely.

The operation of the entire machine is follows: As the wheel 23 rotates intermit tently the attendant supplies bobbins to the pins 24. The rotation of the cam 15 operates through the link 17 and connected parts to oscillate the lever 19..1. As the link 1? moves to the right in Fig. 2 the arm 19 is swung down and its pawl 32 moves back into a position enabling it to enter one of the notches During this motion the spring 28 holds the latch 27 in one of the notches 25 and positively prevents rotation of the wheel 23, but just before the link comes to the end of its stroke the cam engages the latch and forces it back to unlock the wheel, and it is at this time that the pawl 32 enters another one of the notches Any further motion of the link 17 in the same direction would cause the depression at the top of the cam 29 to come in front of the latch 27 and allow the pawl to move back of the notch 25. @f course, the projection at the top of the cam would prevent the spring 22 pulling these parts too far over independently of the cam 15. When the link 17 starts to move back the cam will again unlock the latch 27 and at the same time the pawl comes against the edge of the notch 25 in which it is engaged and positively moves the wheel around one space, that is, a distance equal to the distance between two of the pins 24:. It takes, of course, the entire forward motion of the link to of operations is repeated.

accomplish this motion. There is no need of the cam 29 having any great length because just as soon as the wheel has turned,

slightly the edge of the wheel itself will hold the latch 27 back. As soon as the wheel has turned one space this latch will automatically come into its locking position by engaging in the next notch and holding the wheel in that position. Then the linkl'? is caused to start back by the spring 22 controlled by the cam 15, and the sequence It will be seen that the notches in the edge of the wheel and the other parts are so placed that every time the wheel stops one of the pins 24 is in horizontal position at the front of the wheel.

While these operations are taking place the crank 40 is also performing its functions. During the withdrawal, or motion of the link 17 to the left, the crank is passing upwardly on the left-hand side of the shaft 1-1 as shown in Fig. 2 and is getting ready to force the slide 42 over to the right. During the right hand motion of this slide the projections 5-ion the jaws 4 L engage the outer edges of the switches 51 and these jaws are forced apart. As the jaws now rest against the stops it will be clear that these jaws also are held apart. During almost the entire motion of the slide 42 in this direction these jaws are kept out of contact with the bobbin on the horizontal pin 24 and also out of contact with the filling thereon. hen the projections 54 come to the end of the. tracks 50 on which they slide from the switches 51 they are caused by the spring 46 to swing toward each other rapidly, and the projections 54 engage the rail lf). At this time the jaw plates 56 are forced by the spring l6 into intimate contact with the bobbin at its large end behind the mass of filling thereon, and any further motion of the slide in that direction simply causes the bobbins to be pressed back against the spring 35. By this time the crank 40 has reached the end of its stroke in this direction and the slide starts back. During the first, that is, the slow part of its motion back, the jaw-plates 56 grip the filling on the bobbin positively, removing it therefrom. The projections 54: fit between the inner sides of the tracks 50 and the enlargements 4L7 so that they cannot move apart. Soon they come over the thin part of the rail and then they are free to move toward each other a slight distance. Thus the jaws act positively at first while the large part of the bobbin is being stripped, but afterward act with a yielding pressure on the smaller part. This is a feature of importance because the filling is positively started from the large end of the bobbin and yet it reduces the wear on the bobbins as well as that on the edges of the jaws, and I have found in practice that on this machine the thickenedend of the rail 49 near the end of thestroke of the slide, so that they are then in position to be moved out by the switches on the reverse stroke, and so as to cause them to escape the end of the. slide 65.

It will be understood that the pulling of the filling from the bobbin when the latter is merely supported loosely on one of the rods 2% ordinarily will cause the bobbin to move from the rod. In order to hold the bobbin and to provide for receiving the waste, the stud is located in aline nent with the bobbin when in this position. The operation ofthe jaws results in pulling the end of the bobbinup against the end of this stud so that the filling is moved on the stud and left thereon by the jaws when they start to return. Durin the motion of the slide 412, to the left in Figs. l and 5 the upper end of the lever 67 engages the trigger 66 and has no effect on the latter because it is moved over. in that direction as faras it can tion, however, the lever 67,'being up against the stop 69, the trigger 66 is forced around to'the right in Fig. 5, and the stud 65 is swung into the position shown in lii g. 6. At the same time the clearer slide 70 is moved out by the same motion and forces the filling from the stud 65 and drops it. After the lever 67 has accomplished this result and passed by the trigger 66, the spring 73. forces the parts back into the position shown in Fig. 5. If, however, this is not accom- Jlished the slanting inner edge of the cam l engages the pin and positively forces these parts back into position ready for the next operation.

It will be seen that by this arrangement the bobbins can be placed on the rods 2 lby an operative in a rapid manner, but not necessarily with absolute regularity, and the parts will operate with bobbins of greatly varying lengths. Moreover, if the operative fails to get a bobbin into place it will have no bad effect on any part of the mechanism,

and he cannot ut a bobbin in the wron position. Even if it is not lodged clear down in the right position on the rod, yet there is sufficient space between it and the stud 65 to permit the parts towork and the jaws 56 will engage the filling and force the lies the fact that the rods automatically 1 below, and the em tl e machine and and have shown and de cribed e embodiment of the invention 1 o of the fact that many modificabe made therein by any person d in the without departing from cope of the invention as expressed in Therefore, 1 do not wish to be ed these respects, but

' do claim a: in a machine for stripping filling from bobbins, tne combination of an endless carrier having means thereon for receiving the bobbins, two a ms,- one provided with means for positively nroving the carrier along intermittently, a cam on the other arm, a latch for locking the carrier in position after it has been moved by the first named arm, means operated by said cam for unlocking the latch, and means for simultaneously movi g said a'ms.

2. n machine for stripping filling from bobbins, the combination of a carrier having mea s thereon for receiving and holding the be s is, a lever having means for positively moving the car er, means for moving the lever intern tentl a latch for locking the carrier in position and a cam movable with said lever for unlocking the latch 3. in a machine ror stripping filling from bobbins, the combination of a wheel having pins radially projecting therefrom for receiving bobbins, means for intermittently rotating said wheel, a stri ping mechanism located adjacent to said wheel, means for the wheel and positively looking it position every time a pin comes into ti'ation with the stripping mechanism, no a cam for unlocking said locking means. 4. A bobbin carrier for a stripping machine comprising a rotary wheel having a series of radial pins projecting therefrom for receiving the bobbins, and springs at the bases of the pins for receiving the ends of the bobbins for yieldingly holding the bobbins away from the wheel.

in a machine for stripping filling from bobbins, the comb nation of a rotary wheel having 1"- oans th eon for receiving bobbins, a cam, a link operated by said cam to reciprocate, a lever pivoted on the axis of said wheel. and connected with said link to be oscillated thereby, said lever having two arms, one of said being provided with means for positively moving the wheel around a portion of a revolution for each oscillation of the lever, a latch for locking said wheel in position, and a cam on the other arm of said lever for unlocking the latch.

6. In a machine for stripping filling from bobbins, the combination of a wheel having means thereon for receiving the bobbins, said wheel having notches in one edge thereof, a lever having two arms oscillating on the axis of said wheel, a spring-pressed pawl on one of said arms for engaging said notches and forcing the wheel around, a springpressed latch for engaging in the notches and holding the wheel in fixed position, and a cam on the other arm in position to engage said latch and force it out of its notch when the pawl moves into a notch, whereby the wheel will be unlocked and the pawl will be free to move it forward.

7. In a machine for stripping filling from bobbins, the combination of a wheel for sup porting the bobbins, said wheel having notches in one edge thereof, a lever having two arms oscillating on the axis of said wheel, a spring-pressed pawl on one of said arms for engaging said notches and forcing the wheel around, a spring-pressed latch for engaging in the notches and holding the wheel in fixed position, a cam on the other arm in position to engage said latch and force it out of its notch when the pawl moves into a notch, a cam for positively forcing said lever in a direction to turn the wheel forward, and a spring connected with said lever for moving it in the other direction.

8. In machine for stripping filling from bobbins, the combination of a wheel having means thereon for receiving the bobbins, said wheel having notches in one edge thereof, a lover, a spring-pressed pawl on said lever for engaging said notches and forcing the wheel around, a spring-pressed latch engaging in the notches and holding the wheel in fixed position, and a cam on the lever in position to engage said latch and force it out of its notch when the pawl moves into notch, whereby the wheel will be unlocked and the pawl will be free to move it forward.

9. In a machine for stripping filling from bobbins, the combination of a carrier for receiving the bobbins and movable into position for stripping, a slide movable toward the carrier when in said position, a pair of jaws on said slide, means for forcing said jaws toward each other, a pair of tracks which said jaws engage as they move to ward the bobbins, and a rail for receiving said aws at the ends of said tracks and preventing their moving beyond a certain point toward each other.

10. In a machine for stripping filling from bobbins, the combination of a carrier for bobbins having pins thereon for receiving the bobbins movable into stripping position, a slide movable in line with one of said pins when in stripping position, a pair of jaws on said slide, yielding means for forcing said jaws toward each other, a pair of rails for engaging said jaws and holding them apart when the jaws move forward toward a pin, a track between said rails for receiving the jaws when they leave the rails to limit their motion toward each other, and a pair of switches connected with said tracks for forcing the jaws from the rails on their forward motion, said switches being yieldingly mounted to permit the jaws to move out from under them on their reverse motion.

11. In a machine for stripping filling from bobbins, the combination of a reciprocable slide, a pair of jaws pivoted on said slide, means whereby when said slide moves forward, said jaws are forced apart positively until the slide reaches substantially the end of its travel, yielding means for forcing said jaws toward each other at this time, means for' positively preventing the jaws from engaging each other and for holding them a slight distance apart during the entire travel of the slide in the reverse direction, a pair of filling engaging jaws, one pivoted to each of the other jaws, springs for forcing said filling engaging jaws toward each other, and positive stops for preventing the filling engaging jaws from engaging each other at all times.

12. In a machine for stripping filling from bobbins, the combination of a pair of stripping jaws movable along the bobbin, means for positively holding the jaws against the bobbin during the first part of the stroke, and means for yieldingly holding them against it thereafter during the stroke.

13. In a machine for stripping filling from bobbins, the combination of a pair of jaws movable toward and from stripping position, means for positively holding said jaws in contact with the large end of a bobbin during the first part of the stroke, and means whereby they grip the bobbin yieldingly during the remainder of the stroke.

14. In a machine for stripping filling from bobbins, the combination of a pair of jaws, means for producing a relative longitudinal motion between said jaws and a bobbin to be stripped, positive means for forcing said jaws into contact with the large end of the bobbin and for holding them positively in that position during the first part of the operative stroke, whereby as they approach the small end of the bobbin they will be free to move toward the axis thereof, and springs for normally forcing them toward each other during the last part of the stroke.

15. In a machine for stripping filling from bobbins, the combination of a pair of stripping jaws movable along the bobbin, means for positively holding the jaws against the bobbin during the first part of the stroke, means for yieldingly holding them against it thereafter during the stroke, a stud located in position to engage and hold the end end of the bobbin and to receive the filling therefrom, and means for moving said jaws back to draw the filling from the bobbin on said stud.

v 17. In a machine for stripping filling from bobbins,-the combination of a frame, a

carrier wheel rotatably mounted on the frame and having pins projecting therefrom for recelving bobbins, a spring at the base-of each pin for yieldingly holding the end of the bobbin, a slide on the frame movable toward and from the carrier wheel, a stud mounted on said frame in line with the pins when they are in position for stripping, and means on said slide for engaging the filling on the bobbin and pulling the filling and bobbin against the end of said stud, whereby the stud acts as a stop for the bobbin and receives the filling.

18. In a machine for stripping filling from bobbins, the combination of a carrier, having pins projecting therefrom for re-' ceiving bobbins, a spring at the base of each pin for yieldingly holding the end of the bobbin, a slide movable toward and from the carrier, a stud in line with the pins when they are in position for stripping, and means on said slide for engaging the filling on the bobbin and pulling the filling and bobbin against they end of said stud,.whereby the stud acts as a stop for the bobbin and receives the filling.

19. In a machine for stripping filling from bobbins, the combination of a frame, a slide movable on said frame, a bobbin car rier having a pin for receiving a bobbin, a stud pivoted on said frame in alinement with said pin, means on the slide for removing the filling from the bobbin and forcing it on said stud, and means for moving said stud outwardly from the slide to deposit the filling therefrom.

20. In a machine for stripping filling from bobbins," the combination of a frame, a slide movable on said frame, a bobbin carrier having a pin for receiving a bobbin, a stud pivoted on said frame in alinement with said pin, means on the slide for removing the filling from the bobbin and forcing it on said stud, and a trip-lever on the slide for operating said stud to swing it outwardly as the slide moves up toward said pin.

21. In a machine for stripping filling from bobbins, the combination of a frame, a slide movable on said frame, a bobbin carrier having a pin for receiving a bobbin, a stud pivoted on said frame in alinement with said pin, means on the slide for removing the filling from the bobbin and forcing it on said stud, a clearing device 011 said stud, and means whereby as the slide moves up toward the pin the clearing device will move along the stud and the stud will swing out on the frame whereby the filling will be removed from the stud and deposited.

22. In a machine for stripping filling from bobbins, the combination of a frame, a bobbin carrier having a pin for receiving a bobbin, a stud pivoted on said frame in alinement with said pin, means for removing the filling from the bobbin and forcing it on said stud, a clearing device on said stud, means whereby the clearing device will move along the stud and the stud will swing out on the frame to remove the filling from the stud and deposit it, and yielding means for forcing said clearing device and stud back to operative position after the operation thereof.

23. In a machine for stripping filling from bobbins, the combination of a bobbin carrier having a pin for receiving a bobbin, a pivoted stud in alinement with said pin, means for removing the filling from the bobbin and forcing it on said stud, means for moving said stud outwardly to deposit the filling therefrom, a clearer on the stud, means for swinging the stud out and moving the clearer along the stud to remove the filling therefrom at one side, yielding means for forcing the clearer and stud back into normal position, and positive means for forcing the clearer and stud back.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

DANIEL L. CHANDLER.

Witnesses:

ALBERT E. FAY, C. FORREST WESSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

